A method for separating impurities from process exhaust air is provided and includes the steps of passing a process exhaust air through a separating device comprising a separation unit, regenerating the separating device by passing a regeneration stream therethrough, where outer lateral surfaces of the separation unit are continuously loaded by the process exhaust air and the regeneration stream, dividing the regeneration stream passing through the separating device during regeneration into a first partial stream having an impurity concentration less than a first predetermined limit, and a second partial stream having an impurity concentration equal to or greater than a second predetermined limit, where the second predetermined limit is equal to or greater than the first predetermined limit, returning the first partial stream generated during regeneration to the separating device and directing the second partial stream generated during regeneration to a cleaning device.

In order to provide a filter system for separating off contaminants from a stream of untreated gas that contains contaminants that is of simple construction and is operable efficiently, it is proposed that the filter system should include the following: a base construction through which the stream of untreated gas is guidable and which includes at least one filter module receptacle for receiving at least one filter module, and at least one filter module which is selectively arrangeable on and/or in the at least one filter module receptacle and/or removable therefrom, wherein the at least one filter module includes a plurality of filter element receptacles for receiving a plurality of mutually independent filter elements.

An agent for removing malodor from a painting booth includes a volatile organic compound (VOC) degrading microorganism and a volatile fatty acid (VFA) degrading microorganism. The VOC degrading microorganism is configured to degrade VOC. The VFA degrading microorganism is configured to degrade VFA generated when the VOC is degraded. A method of removing malodor is also disclosed.

In order to provide a filter system for separating off contaminants from a stream of untreated gas that contains contaminants that is of simple construction and is operable efficiently, it is proposed that the filter system should include the following: a base construction through which the stream of untreated gas is guidable and which includes at least one filter module receptacle for receiving at least one filter module, and at least one filter module which is selectively arrangeable on and/or in the at least one filter module receptacle and/or removable therefrom, wherein the at least one filter module includes a plurality of filter element receptacles for receiving a plurality of mutually independent filter elements.

Methods for desorbing volatile organic compounds (VOCs) from beaded activated carbon (BAC) that is loaded with VOCs, during the VOC abatement process using the fluidized carbon bead system include transferring the loaded BAC in an adsorber to a desorber, where a stream of organic solvent passes over the BAC to dissolve at least a portion of the adsorbed VOCs into the organic solvent to regenerate BAC. The regenerated BAC is returned to the adsorber. The organic solvent containing dissolved VOCs may be transferred to a distiller to separate the organic solvents from the dissolved VOCs and may be reused as the organic solvent in the desorber.

A complex malodor removing equipment includes: a neutralizing module which dissolves a portion of malodor-causing substances, in malodorous gas introduced from malodor-producing equipment, in liquid water and removes same, which includes an acidity neutralizing module that introduces an alkaline substance from outside and removes an acidic malodor-causing substance from the malodor-causing substances, and an alkaline neutralizing module that introduces an acidic substance from outside and removes an alkaline malodor-causing substance from the malodor-causing substances, and which connects the acidity neutralizing module and the alkaline neutralizing module; and a balancing module which dissolves the remainder of the malodor-causing substances, in the malodorous gas introduced from the neutralizing module, in water and removes same, which includes an oxidation balancing module that introduces an oxidizing agent from outside and balances the malodor-causing substances, and a reduction balancing module that introduces a reducing agent from outside and balances the malodor-causing substances.

An agent for removing malodor from a painting booth includes a volatile organic compound (VOC) degrading microorganism and a volatile fatty acid (VFA) degrading microorganism. The VOC degrading microorganism is configured to degrade VOC. The VFA degrading microorganism is configured to degrade VFA generated when the VOC is degraded.A method of removing malodor is also disclosed.

An apparatus for separating particles from an air stream, the apparatus having an inlet region for the waste air stream, an outlet region for the waste air stream, a separating device arranged along the waste air stream, and at least one electrode arrangement which is connected to a high voltage source, wherein a charging region having one or more electrodes is provided to form a layer enriched with electrical charges, and wherein a separating region having separating surfaces is provided, which is subordinate to the charging region. The invention also relates to a method for separating particles from the waste air stream of a coating booth, wherein the waste air stream through a charging region in which particles of the waste air stream are charged, and the waste air stream after leaving the charging region flows through a separating region in which charged particles are deposited on separating surfaces.

A method for separating organic solvents from solvent-containing process exhaust air, where the process exhaust air is directed through a separation zone of a separating device, and the separating device is regenerated by passing a regeneration stream through a regeneration zone of the separating device. The regeneration stream passing through the separating device is divided into a first partial stream having an impurity concentration less than a first predetermined limit, and a second partial stream having an impurity concentration equal or greater than a second predetermined limit, by a divider, where the second predetermined limit is equal to or greater than the first predetermined limit, to return the first partial stream generated during regeneration to the separating device and direct the second partial stream generated during regeneration to a cleaning device.

Provided is a system for a spraying booth, including a spraying booth and at least one filter with at least one VOC detector, the system further including a central database where at least data of the VOC detector are stored, whereby is achieved that the value of the measurements can be accessed and controlled centrally, either by the customer's own technicians or by the supplier's technicians, by a communication unit.